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OwnerMasayuki Toyama, Masaaki Seyainventors
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A gas hydrate formation inhibitor consisting of an amphiphilic polymer (such as N-isopropylmethacrylamide (co)polymer) which bears nonionic groups (such as hydroxyl groups) at the polymerization-initiation and -termination ends and has a weight-average molecular weight of 500 to 10,000; and a method for inhibiting gas hydrate formation by adding the gas hydrate formation inhibitor to a system wherein a gas hydrate is to be formed. According to this invention, the formation of gas hydrates can be inhibited, and gas hydrates can be stabilized from the viewpoints of theories of chemical equilibrium and rate process.
A gas hydrate formation and dissociation-controlling agent which is an amphipathic polymer having non-ionic polymerization initiation and polymerization termination ends of the polymer, and having a weight-average molecular weight in the range of 500-10,000.
Dependencies are inferred from the claim text.